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General Freboldite Information |
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 Chemical Formula: |
CoSe | ||
| Composition: |
Molecular Weight = 137.89 gm | ||
| Cobalt 42.74 % Co | |||
| Selenium 57.26 % Se | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
CoSe | ||
| Environment: |
In dolomite veinlets. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1957 | ||
| Locality: |
From the Trogtal quarry, Steinbruch, and at Rote Berg, St. Andreasberg, Harz. Link to MinDat.org Location Data. | ||
| Name Origin: |
For Professor Georg Frebold of Hannover, Germany. | ||
| Name Pronunciation: |
Freboldite + Pronunciation  |
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| Synonym: |
ICSD 42541 | ||
| PDF 15-464 | |||
Freboldite Image | |||
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Images:
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Freboldite Crystallography |
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| Axial Ratios: |
a:c = 1:1.4626 | ||
| Cell Dimensions: |
a = 3.61, c = 5.28, Z = 2; V = 59.59 Den(Calc)= 7.68 | ||
| Crystal System: |
Hexagonal - Dihexagonal DipyramidalH-M Symbol (6/m 2/m 2/m) Space Group: P 63/mmc | ||
| X Ray Diffraction: |
By Intensity(I/Io): 1.066(1), 2.05(1), 9.63(1), | ||
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Crystal Structure:
Mouse |
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Physical Properties of Freboldite |
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| Cleavage: |
None | ||
| Color: |
Copper red, Pink. | ||
| Diaphaneity: |
Opaque | ||
| Hardness: |
2.5-3 - Finger Nail-Calcite | ||
| Luster: |
Metallic | ||
Optical Properties of Freboldite |
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| RL Anisotrophism: |
Less than nickeline. | ||
| RL Color: |
Similar to nickeline, but more intense violet in oil. | ||
Calculated Properties of Freboldite |
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| Electron Density: |
Bulk Density (Electron Density)=6.79 gm/cc note: Specific Gravity of Freboldite =7.68 gm/cc. |
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| Fermion Index: |
Fermion Index = 0.04 Boson Index = 0.96 |
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| Photoelectric: |
PEFreboldite = 61.17 barns/electron U=PEFreboldite x rElectron Density= 415.66 barns/cc. |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Freboldite is Not Radioactive |
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Freboldite Classification |
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| Dana Class: |
02.08.11.10 (02)Sulfides - Including Selenides and Tellurides | ||
| (02.08)where Am Bn Xp, with (m+n):p=1:1 | |||
| (02.08.11)Nickeline Group (Hexagonal: P63/mmc) | |||
| Strunz Class: |
02.CC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf | ||
| 02.C - Metal Sulfides, M:S = 1:1 (and similar) | |||
| 02.CC -With Ni, Fe, Co, PGE, etc. | |||
Other Freboldite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) | ||
| See Also: |
Links to other databases for Freboldite : 1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info 15 - WWW-MINCRYST Search for Freboldite using: Visit our Advertisers for Freboldite : A Bijoux Google Search for FrebolditeAdam's Minerals Google Search for Freboldite Cape Minerals Google Search for Freboldite Dakota Matrix Minerals Google Search for Freboldite Excalibur Mineral Corp. Google Search for Freboldite Exceptional Minerals Google Search for Freboldite John Betts Fine Minerals Search for Freboldite McDougall Minerals Google Search for Freboldite Mineral News Website Link Rock and Mineral Shows Google Search for Freboldite Weinrich Minerals, Inc. Google Search for Freboldite Ask about Freboldite here : Print or Cut-and-Paste your Freboldite Specimen Label here :
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